If you can tolerate drastic market swings over time, a simple investment approach IMHO would be to: (1) Invest based on dollar-cost-averaging. (2)Invest in a S&P 500 index fund or etf with low fees, e.g., Vanguard.
As I look back over the years, I see that I made the mistake of many investors, which was bailing when the heat (losses) became too great. It's difficult to hold-pat, when the market tanks and you see your investments lose 40% of their value. However, if you have the nerve and patience to hold fast, you will eventually see a rebound if history repeats itself.
VFIAX - lifetime (20.5 yrs) return - 265%; Lifetime annual average - 12.9%.
Why Index Funds Beat Actively Managed Funds:
https://www.thebalance.com/why-index-funds-beat-actively-managed-funds-2466411
My money is in weed, gold, tech, and Michael Burry’s positions...